SEO: canonical, sitemap.xml, robots.txt, JSON-LD, noindex admin

templates/post_view.php

@@ -255,10 +255,45 @@ $hasSources     = (!empty($externalLinks) || !empty($files))
 $content            = ob_get_clean();
 $title              = htmlspecialchars($article['title']);
 $seoTitle           = ($article['seo_title'] ?? '') ?: $article['title'];
-$seoDescription     = $article['seo_description'] ?? '';
-$ogImage            = $article['og_image'] ?? '';
 $ogType             = 'article';
 $ogUrl              = url('post/' . rawurlencode($article['slug'] ?? ''));
+$canonical          = $ogUrl;
 $articlePublishedAt = $article['published_at'] ?? '';
 $mainClass          = 'container-fluid';
+
+// Auto-description depuis le contenu si le champ SEO est vide
+$seoDescription = $article['seo_description'] ?? '';
+if ($seoDescription === '') {
+    $plain = strip_tags((new Parsedown())->text($article['content']));
+    $plain = preg_replace('/\s+/', ' ', $plain);
+    $seoDescription = mb_strimwidth(trim((string)$plain), 0, 155, '…');
+}
+
+// og:image : cover puis fallback og_image du meta
+if ($ogImage === null || $ogImage === '') {
+    $ogImage = $article['og_image'] ?? '';
+}
+
+// JSON-LD Article
+$jsonLdData = [
+    '@context' => 'https://schema.org',
+    '@type'    => 'BlogPosting',
+    'headline' => $seoTitle,
+    'description' => $seoDescription,
+    'url'      => $canonical,
+    'datePublished' => date('c', strtotime((string)$articlePublishedAt)),
+    'dateModified'  => date('c', strtotime((string)($article['updated_at'] ?? $articlePublishedAt))),
+    'author'   => ['@type' => 'Person', 'name' => 'Cédrix'],
+    'publisher' => [
+        '@type' => 'Person',
+        'name'  => 'Cédrix',
+        'url'   => rtrim(APP_URL, '/'),
+    ],
+    'inLanguage' => 'fr-FR',
+];
+if (!empty($ogImage)) {
+    $jsonLdData['image'] = $ogImage;
+}
+$jsonLd = json_encode($jsonLdData, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE);
+
 include __DIR__ . '/layout.php';